Furnace.



J. HARRINGTON.

FURNACE.

APPLIOATION nun we. a, 1911.

1,065,359, J Patented June 24,1913.

{1 SHEETS-SHEET 1.

J. HARRINGTON.

FURNACE.

APPLIOATION FILED AUG. 3, 1911.

Patented June 24, 1913.

4 SHBETS-BHEET 2.

9 O/LJ W- (W;

Rig.

J. HARRINGTON.

FURNACE.

APPLICATION FILED AUG. 3, 1911. 1,065,359, Patented June 24,1913.

4 sums-emu 3.

' J. HARRINGTON.

FURNACE.

APPLICATION FILED AUG. 3, 1911. I 1,065,359. Patented June 24,1913.

UNIT D STATES PATENT ()FFIOE.

. .1. J lihfit M v New aosnrh HARRINGTON, or RIVERSIDE, ILLINOIS.

FURNACE.

Specification of Letters Patent.

Patented June 24,1913.

Application filed August 3, 1911. Serial No. 642,058.

To all whom itmay concern;

Be it known that I, JOSEPH HARRINGTON, a citizen of the United States, and a resident of Riverside, in the county of Cook and State of Illii'iois,have invented certain new and useful Improvements in Furnaces; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this-specification.

This invention relates to improvements in furnaces of that kind provided with autoniatic stoking devices oi means by which the fuel fed to the furnaces is continually advanced or moved in a horizontally disposed layer along'or through the combustion cham her during the progress of combustion.

The present invention relates more particularly to stoking devices of that kind hav ingan inclined fuel support on which the fresh fuel rests while undergoing a preliminary coking operation, in this-respect resent; bling a device shown in a prior reissued Pat: out No. 13168, .dated November 15, 19117; grantedto Herman A.,Poppenhusen and/the presentinventor.

The invention consists of the matters hereinafter described and. more particularly pointed outinthe appended claims. 1

In the drawingsEigure-1 is a View rep-. resenting'a central vertical section of a furnace embodying one form of my invention. Fig. 2 1s a view representing a partial side elevation ofthe'front part of the furnace;

Fig. 3 is an end elevation of the parts shown in Fig. 2; Fig. 4 is a top-plan view of the parts sho'wn'in Fig. 2 Fig.5 is a view representing a partial vertical, section through Fig. 2 on the line 5 5 thereof; Figs. 6 and 7 are'detail elevations of parts to. beireferred to more uparticula rly later; Fig. 8.is a view representing a sidd elevation of. the operating parts shown in Fig. 2 and illustrating a slightly different adjustment with the parts shown at one limit of.their movement. Fig. 9 is a view representing a side elevation of the parts shown in Fig. 8 with the parts shown atthc other llmlt'of their movement. 0 4

Referring nowinjdetail to that embodiment of my invention illustrated in the draw1ngs,- 10 indicates the front wall of the furnace, 11, the bridge wall thereof, 12, a-

fuel hopper located in the front wall in connect-ion with a fuel inlet orfeed opening 12 in said front wall. L-

13 indicates an endless traveling .chain grate of that class which is moved or driven in such manner that its upper part or lap travels inwardly, that is to say, from the feed opening toward the bridge wall of the furnace, said-upper lap being substantially horizontali 14 indicates a deflecting arch or partition which extends from the upper part of the bridge wall If inwardly over the grate toa point near the front wall 10 of the furnace.

A space is left between the forward edge of said partition and said front wall, which space. constitutes the. outlet opening for the upward and outward passage oftheproducts of combustion from the combus- -tion chamber or space beneath the said partition.' The said arch of partition- 14 is shown as inclined.upwardly and forwardly.

layer of coal resting and moving-downwardl' thereon during the coking operation whic takes place when the coal passing over said A Said inclined fuel support is designed to sustainthe support is subject to the heatfmm the,,. highly heated products of combustion fromglf the burning fuel on the chain grate-or ra'a diated thereupon from the partition:- 14-. or

other heated surface of the fur'naceI-As shown-in the drawings, said'inclined support is formed by means of two transversely extending inclined and overlapped metal plates 15, 16. Said plates are arranged with the upper edge of the uppermost plate 15 adjacent to the lower edge of the bottom wall -1:2 of thefeed hopper l2, and with the 10 1 edge of said upper plate 15 overlapping the upper margin .of the lower plate: 16.

. The lower margins of said plates 15 and l6 are shown as deflected downwardly so as to form transyersely extending ledges or shoulders, one located within the other at the bottoin of.the supporting surfaces formed by said plates. Said ledges or shoulders w them it at, a

.ma A; a

ing downwardly over the same becoming caked in a solid mass by the action of the heat to which it is subjected, as set forth in the reissued patent above referred to. The said plates 15 and 16 are movably supported in such manner that their lower edges may be adjusted for the purpose of changing the angle of inclination of the plates, thereby varying the rate of feed or movement of the layer of coal thereon according to the rate of coal consumption and the char-. acter of the coal-used. In addition, means is provided for vibrating the plate 16, said means, as will presently appear, being capable of adjustment to vary the amplitude of the vibration and also to vary the relative angular position of the zone or locus of said vibration. The said plates are attached to and supported upon horizontal rock shafts 15 16. As shown in the drawings, the ends of said rock shafts extend through bearing apertures in the vertical side plates 17, which form the supports for the hopper 12 and for the other parts in the front of the furnace.

As shown in the drawings, each of the plates 15 and 16 consists of a plurality of parts or sections joined end to end and each separately attached to its associated rock shaft. Means for securing the several plate sections to the rock shafts, shown in the drawings, consists of integral arms 15", 16", projecting from the rear or lower faces of the plate sections, and provided with laterally open rectangular sockets to receive the rock shafts. Said plate sections are secured to the rock shafts in the case of the upper plate 15 by means of set screws 15 inserted through the side walls of the sockets and bearing on the rock shaft 15, and in the case of the lower plate 16 by means of pins 16 inserted through extensions of the side I walls of said sockets bearing against the rear face of the rock shaft 16. v

Means is provided for imparting vibratory movementto the lower plate 16 as follows: One end of the rock shaft 16 is prolonged through the side plate 17 of the furnaceand has secured to it beyond said. wall, a rock arm 20. Said arm, as illustrated, is provided with a rectangular, laterally open socket 20 to receive said shaft and is rigidly held in placeon the same by means of a setscrew 20".

22 indicates as a whole, a compound lever arm which is pivotally connected at one end to the rock arm 20 near the rock shaft 16 by a pivot bolt 22*, and-is adapted to engage a part carried by said rock arm near its end at a point spaced from the central axis of said rock shaft, and which at its other end has operative connection with a shaft 23 retatively supported adjacent the side wall of the furnace. Said compound lever arm 22,

as shown in the'drawings, comprises two horizontal, )arallel members 2 -t'and 25 connected togct er by two parallel substantialty vertical links 26, 27, said horizontal and vertical members together forming aparal lelogram and being pivotally connected together so that their parallelism is main tained in all positions that they occupy.

The operative connection of the arm 22 to the rotative shaft 23, comprises the following: 28 indicates an. eccentric mounted on the shaft 23 and adapted for rotation there with. The compound arm 22 is provided at its end with a yoke 2st to which is secured a strap 249, said yoke and'strap embracing the peripheral edge of the eccentric 253 which is provided with a bearing green in which theinner edge of said yoke and strap engage In the eccentric is formed. an. arcuate slot- 28", through which the shaft extends, said arcuate slot extending from the center of said eccentric to a point near its periphery. The are of said arcuate slot is described about the center of an aperture 23 located near the circumference of said ecrentric. Said arcuate slot is equal in width to the diameter of theshaft and is so formed at its end at the center of the eccentric that when the shaft 23 is at that end of the slot the central axis of the said shaft will. coincide with the center of the eccentric so that {my movement of theshaft away from that end of the slot will l'ring the shaft to a position eccentric of said eccentric.

' on the shaft 23, adjacent the eccentric 28, is rigidly securedan arm 29.- 29 indicates an aperture in saidarm, the center of said aperture being spacedfrom the rotative' may be shifted to adjust the shaft 23 to any position in .the arcuate slot 28*, thereby varying the throw of the compound arm connected to said eccentric from Zero to an amount determined. by the total possible movement of the shaft in said arcuate slot. "L

To adjust the eccentric 28 so as to vary the throw of the compound arm connectcd thereto, or in other words to swing the eccentric on its pivotal connection with the arm 29 and to maintain it in the adjust- 7 ed position, the following mechanism. is pro vided: An aperture 29 is formed in the arm 29 at a point remote from the aperture 29 and ailikc aperture 28 is formed in the cc centric 28 at a point an equal distance from rotated by a suitable wrench to draw saideye-bolts toward each other or to force them apart. By this construction, the eccentric may be easily swung on its pivotal connection with'the arm 29 and thus adjusted so as to bring the shaft 23 into a position in theslot 28 thereof to provide the required be engaged by the compound lever: and the.

throw of the operating arm 22.

On the shaft 23 is keyed a pinion 33 which *meshes with a gear 3 & mounted on a stub shaft 35 rotatively supported at one side of the plate 17. A pinion 36 is keyed. to said shaft and is adapted to be driven by a gear 37 which is-mounted on the shaft 38 and which drives thee/chain grate in a familiar manner. The shafts 23 and-35,'as shown in the drawings, have bearing" in a frame 39 secured n any convenient manner to the side plate IZof the furnace.

A part is carried by the rock arm 20 which is adapted for engagement by the compound lever so that as said lever oscillates up and down on Its pivotal connection with said arm near the rock shaft 16, said part may rock arm thus swung downwardly. The plate 16 overbalancesthe rock shaft 16 so as to-cause the same to move upwardly when said fixed part is relieved of the pressure of the compound lever. As shown in the drawin'gs, this fixed member consists of a set screw 4:0 'Wl'1] Ch is threaded through theaend' of the rock arm 20 and is adapted for engagement with the lower side of the hori-' zontal arm 25' of the compound lever'arm 22. It is apparent that by adjusting said set screw the angle of the plate 16 with the com pound} lever 22 may-be varied so as to vary the position of the; limits of the vibration of said plate or in other words, vary the zone or locus of said vibration.

The operation of the vibratory mechanism is apparent from the above description. The rotationof the shaft 23 rotates the eccentric.-

28, which imparts an up and down anclforward and backmovement to the end of the compound lever 22'. As the position of the end oijthaaria 25, adjacent the rock, shaft 16*,Ji substantially fixed, and as the links 26,27 provide for horizontal movement between the arms and 25 of the compound levefarm, it'is apparent that the horizontal component of the-movement communicated to t e end of the lever arm connected to the eccentric wiu be lostand will-hate a effecton the-operation of the rock arm.20s The vertical component of the movement of;

the compound lever 22 will becommunicated to said rock arm 20 by the engagement of,

the arm 25 of said compound lever arm-with the set screw 40. By adjusting the eccentlzia to vary the positionofthe shaft in if! ar'cuate slot 28 thereof, the amount of this vertical component may be varied. fromkzero,

which will 'be when the shaft 23 occupiesthe position in the said slot indicated in Fig-. 2,

to the full possible throw of "said eccentric, as indicated; in Figs. 8 and 9, in which case the parts are so adjusted that the plate 16 'will be vibrated through the greateshpossible angle provided for in the mechanismf illustrated in the drawings. By Ladjustmg the screw 40 carried by the rock arm 20, the

lowest and highest positions for any predetermined vibratory movement of the plate may be adjusted to suit the particular kindj of fuel that is'being handled, and I. thus have in the present invention convenient means for varying not onlythe. amount of the vibration but also the average-inclination of the plate lfiduring thatvibration.

An important feature of the presentinventio-n is the fact that a continuous movement of the plate 16 is secured and that nomatter how small the amplitude ofthe vibration, its continuity is always maintained.

Its movementmayibe well represented by a sine curve. This continuity of the vibration. eliminates the sudden jars and stops at the beginning and end of the vibration of the plate, as in apparatus of this kind hereto'i; fore em loyed and thus prevents the sliding movement of the fuel down to the plate.

from being influenced or affected by sudden jars.- The importance of this feature will be realized when it is remembered thatthe average angle of the plate is adjusted substantially to the angle of repose of the par-' ticular fuel which is being used to supply the furnace. To change the angle of inclination of the plate 15 of the inclined fuel support, and

the layer of coal thereon according to the rate of coal consumption, the followlng means is provided: One end of the rock shaft 15*, upon which said plate 15is mount ed, is prolonged through that side plate 17 of the furnace, which is opposite the side plate to which the bracket- 39. is secured, and

is there provided with a depending arm 15.

Secured to and projecting outwardly. from thus vary the rate of feed or movementof said plate-17 is a lug 15* through which is v threaded a set-screw 15 Said set-screw 15,?

is adapted to bear against said depending arm l5 adjacent its lower end. By turning the set-screw 15 the arm 15 will be moved away fromsaid lug 15 or permitted to move toward rthe same according to the direction in nhich said set-screw turned. It is manifest, that by moving said arm 15 the plate l5 will he moved, thus adjusting or changing the angle of inclination of said plate. Said set-screw 15 maintains the plate in its adjusted position. The construction above described is shown in dotted lines in Fig. 2.

The subjectematter of the foregoing paragraph forms apart of the subject matter contained in a prior application filed Jan 'uary 23, 1911, Serial No. 604,042, and in which Herman A. Poppen uisen and myself are joint inventors.

ll claim as my invention 1. In a device of the character described, in combination with a "furnace provided with a traveling grate, and an inclined fuel support at the forward end ofs id grate, said support including a transv rsely ex tending plate and a rock shaft upon which said plate mounted, mechanism for imparting continuous oscillatory movement to se id rocleshaft including a rock-arm secured to said rock-shaft, a -rotative eccentric located substantially in longitudinal alinement with the said rock-arm, an operating arm having operative connection with said :ccen't'ric, and means connecting said operating arm with said roclearm, permitting endwise movement of the former with respect to the latter.

9 in a device of thecharacter described in combination with a furnace provided:

with a traveling" grate, and an inclined fuel support'at the forward end of said grate, aid support including a transversely extending pivotally supported. plate, mechanismfor imparting continuous oscillatory movement to said plate including an eccen tric having operative connection with said plate, a mopnted, and means for connecting said eccentric with said shaft, permitting the ad justment of said' eccentric in a direction substantially at right angles to a line passing through the said shaft and the axis of oscillation of said plate.

3. In a device of the character described,

in con'ihination with a furnace provided with a traveling grate, and an inclined fuel support at the forward end of said grate, said support including a transversely extending pivotally supported plate, mechanism for imparting continuous oscillatory movement to said plate including a roclrarm having operative connection with said plate, a rotative eccentric, an operating arm having operative connection with said eccentric, means connecting said operating arm with said rock-arm, permitting endwise movement of the former with respect to the latter, and means for adjusting the mean inclination of said plate for any a litude of oscillation. of said plate.

shaft upon which said eccentric is' of the character described, in combination with a furnace provided with a traveling grate, and an inclined fuel support at the forward end of said grate, said support including a transversely extending plate and a rock shaft upon which said plate is mounted, mechanism for im- 4. In a device parting continuous oscillatory movement to said rock-shaft including an eccentric, an operating arm having operative connection with said eccentric, a roclearni secured to said rock-shaft, and means connecting said operating arm with said 'rock'arm, permit.-

ting endwise movement of the former with respect to the latter.

5. In a device of the character described, in combination with a furnace provided with a traveling grate, and an inclined fuel support at thefo'rward end of said grate, said. support including a transversely extending plate and a rock-shaft upon which said plate is mounted, mechanism for imparting continuous oscillatory movement to said rock shaft including an eccentric, an operating arm having operative connection with said eccentric, a rock-arm secured to said rock-shaft, and two parallel links affording a connection between said operating arm and said rock-arm, adapted to permit endwise movement of the former with respect to the latter.

6. In a device of the character described, in combination with a furnace provided with a traveling grate, and an inclined fuel support at the forward end of said grate, said support including a transversely extending plate and a rock shaft upon which said plate is mounted, mechanism for imparting continuous oscillatory movement to said rock-shaft including an eccentric, an operating arm connected with said eccentric, aIock-arm secured to said rock-shaft, means connecting said operating arm with said roclT-arm, permitting endwise movement of the former with respect to the latter, a shaft upon which said eccentric is mounted, means connecting said eccentric with said shaft, permitting the adjustment of said eccentric in a direction substantially at right angles to a line passing through the said shaft and l the axis of oscillation of said plate, and means for adjusting the mean inclination of said plate for any amplitude of oscillation of the said plate.

7. In a device of the character described, in combinatinn with a furnace provided with a traveling grate, and an inclined fuel support at the forward end of said grate, said support including a transversely extending plate and a rock-shaft upon which said plate 's mounted, means for imparting continuous oscillatory movement to said rock-shaft including a r-otative eccentric, a compound operating arm, a rock-arm secured to said rock-shaft and adapted to be engaged by 'izo ,said compound arm, said compound arm comprising two parallel members, one of which is connected with said eccentric and.

the other with said rock-arm, and parallel rock-shaft and having a part remote from said rock-shaft adapted to be engaged by said compound arm, said compound arm comprlsing two parallel members, one of which is connected with said eccentric and the other with said rork-arm, and parallel links. connecting said members, permitting one of said membersfl'o have endwise movement with respettitothe other, and means for varying the angular relation of said member which is cohnected with said rockarm, relatively to said rock-arm.

9. In a device of the character described, in combination with a furnace provided with a traveling grate, and an inclined fuel support at the forward end of said grate, said support including a transversely extending plate and a rock-shaft upon which said plate is mounted, means for imparting continuous oscillatory movement to said rock-shaft including a rock-arm secured to said rockshaft, a rotative eccentric, and a compound arm, said arm comprising two parallel members, one of which is connected with said eccentric and the other pivotally connected with said rock-arm adjacent said rock-shaft;

one of said members having endwise move ment with respect to the'other, and an adj ustable stop member adapted to'vary the angular relation of said rock-arm to the member connected with the same.

10. In adeviceof the character described, in combination with a furnace provided with a traveling grate, and an inclined fuel support at the forward cnd-ofsaid grate, said support inclljiding a transversely extending pl ate and a rock-shaft upon which said plate is mounted, means for imparting continuous oscillatory movement to said rock-shaft including a rock-arm-se'cured to said rock-. shaft, an eccentric, located substantially in longitudinal alinement with said rockarm and providedwith an arcuateslot, the,

median line of which passes through its center, a shaft extending through said slot, an arm keyed to said shaft, said eccentric bein pivotally connected with said arm an adapted toswing in the'arc'of said slot, an operating arm connected with said eccentric, meansconnecting saidoperatin'g arm with said rock-arm, permitting eudwi'se movement of the former with respect to the latter, and means for adjusting said eccentric in a direction substantially at right angles to a line passing through said shaft and the axis of oscillation of said plate and maintaining said eccentric in adjusted position. I In testimony, that I, claim the foregoing as my invention afiix my si ature in the 

